基于对象的文件系统I/O分析与评测

ANALYSING AND EVALUATING I/O PERFORMANCE OF OBJECT-BASED FILE SYSTEMS

目前基于对象的存储设备中多采用通用的文件系统如EXT2、EXT3等进行管理,但面临着对海量数据的高效存储、管理问题。基于对象的文件系统实现了对象按大小在磁盘区域中组织管理,并采用了Hash、最坏适应等机制,提高磁盘利用率的同时显著提升了磁盘吞吐率。对EXT2、EXT3、基于对象的文件系统进行了I/O性能测试及分析。实验表明,基于对象的文件系统的I/O性能是EXT2、EXT3文件系统的2到3倍。

Currently,most of the object-based storage devices adopt universal file system such as EXT2 and EXT3 to manage,but are facing the problem of effectual storage and management against massive data.The object-based file systems realise to organise the objects in the disk area according to their size,and introduce the mechanisms of Hash and WorstFit,which improves the utility rate of the disk and observably raises its throughput rate at the same time.In this paper we test and analyse the I/O performances of EXT2,EXT3 and object-based file systems.Experimental results show that the I/O performance of the object-based file systems is two or three times of that of the EXT2 and EXT3.